package PTA;

import java.util.Scanner;

public class PTA_7_56 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String S = scan.next();
        String[] str = S.split("\\.");
        if(str[1].equals("com")||str[1].equals("cn")) {
            System.out.println(S + "是正确的Email地址");
        }
        else {
            System.out.println(S + "不是正确的Email地址");
        }
    }
}
